No files being backed up

I’m absolutely loving Comodo Backup. There is just one big problem.
At some time recently Comodo stopped backup up my files. It is only creating the folders in my backup to location I have specified. Absoltely no files whatsoever.
I have tried to change from incremental to full, but it had no effect.

I wonder if there is a setting I need to make?

regards

Wow, my bad. For some reason the folders I had originally set up were missing from the backup location list. Wierd. Probably my mistake.